161277707 has 8 divisors (see below), whose sum is σ = 164268000. Its totient is φ = 158307520.

The previous prime is 161277703. The next prime is 161277713. The reversal of 161277707 is 707772161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161277707 - 2² = 161277703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161277703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11669 + ... + 21417.

It is an arithmetic number, because the mean of its divisors is an integer number (20533500).

Almost surely, 2^161277707 is an apocalyptic number.

161277707 is a deficient number, since it is larger than the sum of its proper divisors (2990293).

161277707 is an equidigital number, since it uses as much as digits as its factorization.

161277707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10053.

The product of its (nonzero) digits is 28812, while the sum is 38.

The square root of 161277707 is about 12699.5160143999. The cubic root of 161277707 is about 544.3247896041.

The spelling of 161277707 in words is "one hundred sixty-one million, two hundred seventy-seven thousand, seven hundred seven".